IPoS/DVB-S2 with ACM

The most efficient satellite outbound channel

DVB is an international organization who set standards for the transmission of digital data over satellite.  The DVB-S2 is the latest generation standard for transmission over satellite.  The “ACM” feature of this standard provides for the Adaptive Coding and Modulation (hence the ACM acronym) of the outbound channel.

DVB-S2 Key Features:

• 8PSK and QPSK Modulation
  With the addition of 8PSK modulation the DVB-S2 standard increases the bits per hz over satellite by up to 50%.
  
• BCH with LDPC Coding
  The forward error correction scheme of BCH/LDPC is more powerful than turbocodes and results in much lower power utilization of the satellite.
  
• Adaptive Coding And Modulation (ACM)
  The ACM feature means that the coding (FEC rate) and modulation (8PSK or QPSK) DVB-S2 outbound carrier can be dynamically modified to optimize the performance per terminal.

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With DVB-S2 ACM a satellite operator can realize up to 50% more throughput over the satellite than with DVB-S and up to 20% more throughput over the satellite than with the simple mode of DVB-S2 called CCM (constant coding and modulation).